Stahlecker



July 1, 1952 w. STAHLECKER DRAWING MECHANISM FOR SPINNING MACHINES 2SHEETS-SHEET 1 Filed NOV. 13, 1950 a Imus/75011" W 3 July 1, 1952 w.STAHLECKER 0 DRAWING MECHANISM FOR SPINNING MACHINES Filed Nov. 13, 19502 SHEETSSHEET 2 JZgc' Inventor? Patented July 1, 1952 OFFICE DRAWINGMECHANISM FOR SPINNING MACHINES Wilhelm Stahlecker, Tubing-en, GermanyApplication November 13, 1950, Serial No. 195,191

, In France September 10, 1948 13 Claims. (01. 19 1a0) My presentinvention relates to a drawing mechanism for a spinning machine in whichthe upper rollers of the forward drawing field are saddle loaded.

One of the objects of my present invention is to provide a saddle memberunit for the upper rollers of drawing mechanism which does not requireany adjustments therein.

Another object of my present invention is to provide a saddle memberunit which may be easily removed from the drawing mechanism so that itmay be replaced by another saddle member unit of a different size thansaid first-mentioned saddle member unit.

A further object of my present invention is to provide a saddle memberunit which will not permit the upper rollers to fall when the saddlemember unit is removed. 7

A still further object of my present invention is to provide a saddlemember unit which can have the loading means for the upper rollersremoved therefrom only after the saddle member is removed from thedrawing mechanism.

Another object of my present invention is to provide a saddle memberunit which is of a simple, substantially one-piece construction so thatit lends itself to mass production.

A preferred embodiment of my present invention mainly consists of asaddle member having some parts thereof shaped in such a way that thesaddle member unit may be mounted on the shafts connecting the upperrollers of the forward drawing field and having other parts thereofimmovable with respect to the first-mentioned parts and shaped so as toform holders for the clearer rollers, connecting means fixedly mountedon the saddle member unit for connecting the load for the upper rollersto the saddle member unit, the last-mentioned means being immovablymounted on the saddle member unit and means for connecting the saddlemember unit to the drawing mechanism in such a way that the saddlemember unit may be removed-from the drawing mechanism and replaced by asaddle member unit of a different size than the first mentioned saddlemember unit.

The novel features which are considered as characteristic for theinvention are set forth in particular in the appended claims. Theinvention itself, however, both as to its construction and its method ofoperation, together with additional objects and advantages thereof, willbe best understood from the following description of specificembodiments when read in connection with the accompanying drawings, inwhich:

Fig. 1 shows a side elevation of a drawin mechanism constructed inaccordance with my present invention, with parts thereof shown insection;

Fig. 2 shows a side elevation, partly in section, of some of thestructure shown in Fig. 1;

Fig. 3 shows an embodiment of a saddle member which is of a slightlydiiferent construction from the saddle member shown in Figs. 1 and 2;

Fig. 4 is a side view, partly in section, of a further embodiment of asaddle member constructed in accordance with the present invention;

Fig. 5 is a sectional view of a still further embodiment of a saddlemember constructed in accordance with my present invention;

Fig. 6 is a plan view, partly in section, of a saddle member of the typeshown in Figs. 1 and 2 and Fig. '7 is a sectional view taken on line 'ilof Fig. 2 and looking in the direction of the arrows.

In drawing mechanism of machines for spinning cotton, cellulose fiber,wool and the like, it is customary to use either self loaded upperrollers, which are so large and heavy that they grip the fiber materialbetween the upper and lower roller as a result of their own weight, orupper rollers of small diameter and weight which are known assaddle-loaded rollers. Where saddle-loaded upper rollers are used, thenecessary gripping of the fiber material is obtained by means of aloading device which cooperates with a saddle member located on theupper rollers.

Self loaded upper rollers can seldom be made large enough to efficientlygrip the fiber material because the drawing mechanisms do not provideroom enough for such large upper rollers and because such upper rollersare diificult to handle. As the diameters of the self loaded upperrollers increase, the contact conditions between the upper and lowerrollers become less favorable, and the gripping action becomes lessreliable. This type of upper roller provides components of force whichact in a direction parallel to the drawing plane as well as in adirection perpendicular to the drawing plane. This action isparticularly disadvantageous because only the component acting in adirection perpendicular to the drawing plane is used for gripping thefiber material, whereas the component acting parallel to the drawingplane causes undesired friction in the upper rollers with the resultthat the upper rollersbecome worn and cannot be rotated eificiently bythe lower rollers.

In spite of the disadvantages, self loaded upper rollers are generallypreferred mostly for the entrance rollers in double-adjustable drawingmechanisms for ring spinning machines, because they simplify theadjustment of the drawing mechanism. If, in place of self loaded upperrollers, rollers are used which require additional loading means, thenthe device for attaching the load to the upper rollers must be adjustedin addition to the upper roller holder itself each time the drawingmechanism is adjusted. In addition to these operations, the adjustmentof the clearer roller holders is also required so that the matching ofthe roller positions of the drawing mechanism to the length of thefibers of the spinning material requires a very co1nplicated processinvolving the use of expensive and elaborate adjustment mechanisms andthe like.

Due to recent investigations, it has become desirable to operate drawingmechanisms with 'a much greater drawing force in the forward drawingfield than was generally used heretofore. This is particularly true inthe working of synthetic fibers. This circumstance requires a greatgripping force at the point where the fibers are drawn into the drawingmechanism, which, due to the above-mentioned reasons, can only beobtained by saddle loaded upper rollers.

My present invention avoids the above men tioned difficulties and makepossible the use of saddle loaded entrance rollers with their preferablespinning techniques, without requiring several adjustments of the loadcarrier, the spacing of the rollers and the point of application of theload each time the drawing mechanism is matched to different fiberlengths of the spinning material. In this way the danger of erroneousadjustments is avoided.

This important advance is obtained by the use of interchangeable loadcarriers in Which the relation between the upper rollers of the forwarddrawing field, the corresponding point of application of the load andlocation of the clearer roller holders are not adjustable. The drawingmechanism is adapted to be used for various fiber lengths of thespinning material simply by changing one load carrier for another loadcarrier of a different size.

My present invention takes advantage of the fact that an accurateadjustment of the rollers to the fiber length of the spinning materialis not as important in the forward field of the drawing mechanism as itis in the main drawing field, so that the relationship between therollers in the forward drawing field can be regulated by a series ofsteps. If the magnitude of these steps are properly chosen so as topermit the drawing mechanism to operate efficiently, it will be possiblein general to use only two to four different positions of the rollers inthe forward drawing field.

In the construction shown in Fig. 1, the saddle member unit 4 is mountedon the upper rollers l and 2 of the forward drawing field. This saddlemember 4 is made of sheet metal and has a U- shaped cross section, asmay be seen from Fig. 5. The depending side portions of saddle member #3have parts thereof cut away so as to form recesses extending upwardlyfrom the lower edges of these side portions. As is shown in Fig. 6, thesaddle member 4 is connected to the shafts which extend between theupper rollers l and 2. These shafts are received in the above mentionedrecesses, as is clearly shown in Fig. 1.

Parts of the top portion of saddle member 4 are bent upwardly so as toform clearer roller holders l3 and l 4, as shown in Fig. 1.

' In order to connect the saddle member 4 to the drawing mechanism, anopening 29 is formed in the top portion of saddle member i. Pivotallymounted on the drawing mechanism is the pawl member 25 which engages anedge of the opening 29, as is clearly shown in Fig. 1.

In order to provide a proper load for the upper rollers l and 2, thesaddle member 4 is provided with a cross member i which extends acrossthe space between the depending side portions of saddle member 4 and isfixedly connected at its ends to these side portions. The member 1 maybe of the type shown in Fig. 6, where the ends extending through thesides of saddle member 4 are upset; or the member 1' may simply-be abolt and nut, as is designated by element 1, shown in Fig. 7.

The hook member 6, which has the loading weight (not shown) connected atthe lower end thereof, is mounted on an elongated shaft member 3 on theupper part of which a number of notches are provided for seating thehook member 6 and adjusting it so as to achieve proper contactrpressureof the rollers, said notches being not shown in the drawing. The saddlemember for the delivery rollers of the drawing mechanism is connected tothe rear end of shaft memher it, as is clearly shown in Fig. l. Mountedon this last mentioned saddle member is the holder 21 for the clearerroller 28. The elongated shaft member is provided with a projection itat the forward end thereof.

A bifurcated element 15 is formed with an opening passing transverselytherethrough and the elongated shaft member 8 extends through thisopening. A threaded opening extends through a portion of bifurcatedelement I 5 which overlies the elongated shaft member 8, and the setscrew 5 is threadedly mounted in this lastmentioned opening so as torigidly connect element l5 to element 3. The bifurcations of element isare mounted on opposite sides of cross member I, as is clearly shown inFig. 1. It may be seen from Fig. 7 that element l5 does not extend theentire distance across the space between the depending side portions ofsaddle member 4.

The saddle member 4 is provided with a cut out portion 9 in the topportion thereof, as shown in Fig. 1, so that the hook member 6 may beguided along the elongated shaft member 8.

As was mentioned above, saddle member 4 contains no adjustable parts sothat, when it is necessary to provide a relation between the upperrollers l and 2 which is substantially different from that shown in Fig.1, the saddle member 4 shown in Fig. 1 is removed and replaced byanother saddle member of a different size.

Saddle member 4 is removed first by taking oif clearer roller 28, thenremoving hook member 6, and then lifting pawl member 28 so that saddlemember 6 may be moved from the carriage of V the drawing mechanism. Whensaddle member 4 is separated from upper roller 2, the set screw 5 isloosened and the shaft member 8 may be drawn through the bifurcatedelement 15 until the projection it comes in contact with the bifurcatedelement i5. It will be noted that the bifurcated element 15 is locatedso close to the top portion of saddle member 4 that it cannot be removedfrom cross member 7 by being raised in a direction perpendicular to thedrawing plane. Therefore, when shaft member 8 has the projection 16thereof in contact with, or located adjacent to bifurcated element I5,this element may be rotated through 90, as shown in Fig. 2. so that itmay then be removed from cross member I. The new saddle member 4 iseasily and accurately placed in proper alignment with the carriage ofthe drawing mechanism simply by a reversal of the above steps.

In the saddle members 4 which are of different sizes the cross member Iand the cut out portions 9 are so arranged that the proper grippingforce for the new relationship of the upper rollers is provided. Also,the clearer roller holders I3 and I I of the saddle members of differentsizes are located in a proper position for the particular rollers withwhich the respective saddle members are to be used. In this way, theneed for special adjustment of the point of application of the load andfor holders of the clearer holders each time the drawing mechanism isadjusted is not required. Thus, an extremely simple means is providedfor changing the positions of the upper rollers without errors andadjustments.

The depending side portions of the saddle member 4 are yieldingly formedso that they bear against the sides of the rollers as shown at I], I8,I9 and 20 in Fig. 6. In this way a faultless transmission ofthe force ofthe load to the upper rollers is obtained.

In the usual working of cotton and cellulose fibers, two or three wellchosen saddle members 4 will usually suffice. Therefore, it is notnecessary to purchase several groups of saddle members for each machineof a spinning plant, but instead a single group of saddle members willsuffice for changing the roller positions of a whole row of machines.

In special cases, it may be desirable to provide a saddle member 4 ofthe type shown in Fig. 3 where several positions II are provided for theupper rollers, where several openings I2 are provided for the locationof cross member I and where an additional clearer roller holder 24 isprovided.

Under certain circumstances it may be desirable to secure the shaftsconnecting upper rollers I and 2 against falling during the removal ofsaddle member 4. In order to obtain this result a saddle memberconstructed as shown in either Figs. 4 or 5 may be used.

The spring means 25, shown in Fig. 4, comprises a pair of dependingfingers associated with each of the shafts connecting the upper rollersand yieldingly holding these shafts fast to saddle member 4 so that whenthe saddle member 4 is removed these rollers are also removed. However,these rollers may easily be separated from member 4 by spreading apartthe spring members 25.

The same result is obtained in a simple way by the structure shown inFig. 5 wherein the depending side portions 2I of saddle member 4 areyieldingly mounted against the shoulders 23 of the upper roller membersI and 2. These depending portions 2I are provided with outwardly bentends 22, as shown in Fig. 5. Thus when the saddle member 4, shown inFig. 5, is removed, the roller members I and 2 will be carried alongwith it but may be easily separated from saddle member 4 by moving theside portions 2I towards each other.

It is evident that the saddle members of my present invention are of asimple construction and may be very inexpensively manufactured, so thatthey lend themselves to massproduction techniques. They can be used withadvantage not only for new drawing mechanisms but also lend themselvesequally to the modernizing of old drawing mechanisms.

It will be understood that each of the elements described above, or twoor more together, may also find a useful application in other types ofspinning machines differing from the types described above.

While I have illustrated and described the invention as embodied indrawing mechanism for spinning machines, I do not intend to be limitedto the details shown, since various modifications and structural changesmay be made without departing in any way from the spirit of myinvention.

Without further analysis, the foregoing will so fully reval the gist ofmy invention that others can, by applying current knowledge, readilyadapt it for various applications without omit ting features that, fromthe standpoint of prior art, fairly constitute essential characteristicsof the generic or specific aspects of this invention and, therefore,such adaptations should and are intended to be comprehended within themeaning and range of equivalence of the following claims.

What I claim as new and desire to secure by Letters Patent is:

1. In a drawing mechanism for spinning machines having clearer rollersand saddle-loaded pairs of upper rollers located in the forward drawingfield and connected by a shaft extending between said pairs of rollers,in combination, an elongated saddle member unit having a U-shaped crosssection so that said unit comprises a pair of depending side portionsforming a space therebetween and having upper edges connected by a topportion of said unit, the said side portions having lower edges distantfrom said upper edges and having parts thereof including said loweredges cut away so as to form spaced recesses in one side portion locatedopposite to spaced recesses in the other side portion, said recessesextending upwardly from said lower edges, whereby the shafts connectingthe upper rollers may be located in said recesses of said saddle memberunit, and said saddle member unit having parts of said top portion bentupwardly therefrom so as to form holders for clearer rollers; connectingmeans fixedly mounted on said saddle member unit for connecting the loadfor said upper rollers to said saddle member unit, said lastmentionedmeans being immovably mounted on said saddle member unit; and means forconnecting said saddle member unit to said drawing mechanism in such away that said saddle member may be removed from said drawing mechanismand replaced by a saddle member unit of a different size than said firstmentioned saddle member unit.

2. In a drawing mechanism for spinning machines having clearer rollersand saddle-loaded pairs of upper rollers located in the forward drawingfield and connected by a shaft extending between said pairs of rollers,in combination, an elongated saddle member unit having a U- shaped crosssection so that said unit comprises a pair of depending side portionsforming a space therebetween and having upper edges connected by a topportion of said unit, the said side portions having lower edges distantfrom said upper edges and having parts thereof including said loweredges cut away so as to form spaced recesses in one side portion locatedopposite to spaced recesses in the other side 7 portion, said recesseseirtending upwardly from said lower-edges whereby the shaftsconnectingthe upper rollers maybe located in said recesses of said saddle memberunit, and said saddle memberjunit having partsof said top portion bentupwardly therefrom "so as to formholders for clearer rollers; connectingmeans, "fixedly mounted onsaid saddle 'memberuiiit forconnecting theload for said upper rollers tolsaid saddle member unit; saidlast-mentioned means,

being imznovablymounted'on said saddle member unit, comprising a crossmember'extending across said space between said dependingportions ofsaid saddle member unit, located between said upper and lower edgesandhaving a pairof ends each of which is connected to oneof saiddependingside portions; and means for connecting said saddle member unit tosaiddrawingmechan'ism'in such away that said saddlememberjmay be removedfrom said "drawingmechani'sm" and replaced by a saddlefmeniber unit of'adifferent size than said first mentioned saddle member unit. 7

3. In a drawingmechanism for spinningmachines having clearer: rollersand saddle loaded pairs of upper rollerslocated'in the forward drawingfield and connected by a shaft extending between'said pairs of rollers,in combination, an elongated saddle member unit having a U-shaped crosssection so that said unitcomprises a pair of depending side portionsforminga space therebetween and having upper edges connected by a toportion of said unit, the said side portions having lower edges distantfrom said'upper edges and having parts thereof including said loweredges cut away so as toform spaced recesses'in 'one side portionlocatedopposite to spaced recesses in the other side portion, saidrecesses extending upwardly fromsaid' lower edges, whereby the shaftsconnecting the upper rollers may be located in saidrecesses ofsaidsaddle member unit, andsaidsaddle member unit having parts of said topportion bentupwardly therefrom so as to formholdersfor clearer rollers;connecting "means fixedly mounted on said saddle member unit forconnecting theload for said upper rollers to saidsaddle member unit,said last-mentioned means, being immovably mounted'on said saddle memberunit, comprising a cross'member extending across said space between saiddepending portions of said saddle member unit, located between saidupper and loweredg'es and having a pair of endseach'of which isconnected toone of said depending side portions; and a pawl memberpivotally rnountedat the entrance end of said drawingmechanism, said topportion of said saddle member unit being formed with an opening passingtherethroughand having anedge which said pawl member engages so as toconnect said saddle memberunit to said drawing mechanism and so as topermit the removal of said saddle member unit from said drawingmechanism.

l. In a drawing mechanismfor"'spinning machine having clearer rollersand saddle-loaded pairs of upper rollers located in the forward drawingfield and'connect'e'd' by a shaft extending betweensaid pairs ofrollers, in combination, 'an elongated saddle member 'un'it'havinga ush'aped cross section'so' th'at'said unit comprises a pair or "dependingside portions 'forming a space therebetween and havingupper edgesconnected by a top 'portionlof said unit, the said'side portions' havinglower edges distant'irom said upper edges and having parts'throf.including said lower edges -cut away 'so'as toifo'r'm spaedre- Vcessesextending upwardly from said lower'edges,

whereby theshafts'conn'ecting the upper "rollers may be located in saidrecesses of said saddle member unit; and said saddle member unit having"parts of said top portion bent upwardly therefrom so as to form holdersfor clearer rollers; connecting means fixedly mounted on said saddlemember unit for connecting the load for said upperrollers to said saddlemember unit, said last-mentioned means, being immovably mounted on saidsaddle member unit, comprising a cross member 'extendingacross saidspaceibetween said depending portions of said saddle member unit,located between said upper andlower edges and having a'pair of ends eachof which is connected to one 'of said depending side portions; a pawlmember pivotally mounted 'at the entrance end of said drawing mechanism,said'top portion of said saddle member unit being formed with an openingpassing therethrough and 'having an pairs of upper rollers located inthe forward drawing field and connected bya shaft extending between saidpairs 'of rollers, in combination, an elongated saddle member unit"having a U-shaped cross section so thatsaid unit comprises a pair ofdepending sideportions forming a space therebetween and having upperedges connected bya top portion of'said unit, the'said side portionshaving lower-edges distant'from said upper edges and havingparts thereofincluding said lower edges cut away so as to form spaced recesses in'oneside portion located opposite to spaced recesses inthe'other' sideportion, said recesses-extending upwardly from said lower edges,whereby" the shafts connecting the upper rollers may be located in saidrecesses of said saddle member unit, andsaidsaddle member 'unit havingparts of said topoportion'bent up- "wardly therefrom so as to formholders for'clearer rollers; connecting means fixedly mounted onsaidsaddle member unit for connecting the load for said upper rollers'tosaid saddle memberunit, said last-mentioned "means, being immovablymounted on said saddle member unit, comprising a crossmemberextendingacross said space between said depending portions of saidsaddle member unit, located between said upper and lower edges'andhavinga pairfof, endseaeh of which is connected to one of said depending's'ideportions; a pawl member pivotally mounted'at the entrance end of saiddrawing mechanism, said top portion of said saddlemember unit'beingformed with. an opening passing therethrough and having'anedgewhich saidpawl member engages so 'as to connectsaid saddle member unit to' said"drawing mechanism and so as'to permit the removal of said saddle memberunit from said drawing mechanism; an elongated shaft member located insaid saddle member and having the'hook forthe load on the saddle memberconnected theretojmeans'for connecting said elongated shaft :member tosaid "cross "member comprising a bifurcated element having thebifurcations thereof located on opposite sides of said cross member, thesaid bifurcated element being formed with an opening passingtransversely therethrough and the said elongated shaft member extendingthrough said last-mentioned opening; and means for fixedly connectingsaid bifurcated element to said elongated shaft member.

6. In a drawing mechanism for spinning machines having clearer rollersand saddle-loaded pairs of upper rollers located in the forward drawingfield and connected by a shaft extending between said pairs of rollers,in combination, an elongated saddle member unit having a U-shaped crosssection so that said unit comprises a pair of depending side portionsforming a space therebetween and having upper edges connected by a topportion of said unit, the said side portions having lower edges distantfrom said upper edges and having parts thereof including said loweredges cut away so as to form spaced recesses in one side portion locatedopposite to spaced recesses in the other side portion, said recessesextending upwardly from said lower edges, whereby the shafts connectingthe upper rollers may be located in said recesses of said saddle memberunit, and said saddle mmeber unit having parts of said top portion bentupwardly therefrom so as to form holders for clearer rollers; connectingmeans fixedly mounted on said saddle member unit for connecting the loadfor said upper rollers to said saddle member unit, said last-mentionedmeans, being immovably mounted on said saddle member unit, comprising across member extending across said space between said depending portionsof said saddle member unit, located between said upper and lower edgesand having a pair of ends each of which is connected to one of saiddepending side portions; a pawl member pivotally mounted at the entranceend of said drawing mechanism, said top portion of said saddle memberunit being formed with an opening passing therethrough and having anedge which said pawl member engages so as to connect said saddle memberunit to said drawing mechanism and so as to permit the removal of saidsaddle member unit from said drawing mechanism; an elongated shaftmember located in said saddle member and having. the hook for the loadon the saddle member connected thereto, said shaft mem ber having aprojection mounted at an end thereof; means for connecting saidelongated shaft member to said cross member comprising a bifurcatedelement having the bifurcations thereof located on opposite sides ofsaid cross member, the said bifurcated element being formed with anopening passing transversely therethrough and the said elongated shaftmember extending through said last-mentioned opening; and means forfixedly connecting said bifurcated element to said elongated shaftmember, comprising a threaded opening extending through a portion ofsaid bifurcated element which overlies said shaft member and a screwmember threadedly mounted in said threaded opening and bearing againstsaid shaft member, said elongated shaft member being prevented fromcompletely sliding through said opening passing transversely throughsaid bifurcated element by contact of said projection thereof with saidbifurcated element, and said bifurcated element extending upwardly fromsaid cross member and toward said top portion of said saddle member unitso that it is adjacent to but slightly spaced 10 from said top portionof said saddle member unit, whereby said elongated shaft member andbifurcated element may be removed from said saddle member unit onlyafter turning said bifurcated element and said shaft member therewithabout said cross member.

7. In a drawing mechanism for spinning machines having clearer rollersand saddle-loaded pairs of upper rollers located in the forward drawingfield and connected by a shaft extending between said pairs of rollers,in combination, an elongated saddle member unit having a U-shaped crosssection so that said unit comprises a pair of depending side portionsforming a space therebetween and having upper edges connected by a topportion of said unit, the said side portions having lower edges distantfrom said upper edges and having parts thereof including said loweredges cut away so as to form spaced recesses in one side portion locatedopposite to spaced recesses in the other side portion, said recessesextending upwardly from said lower edges, whereby the shafts connectingthe upper rollers may be located in said recesses of said saddle memberunit, and said saddle member unit having parts of said top portion bentupwardly therefrom so as to form holders for clearer rollers; connectingmeans fixedly mounted on said saddle member unit for connecting the loadfor said upper rollers to ,said saddle member unit, said last-mentionedmeans, being immovably mounted on said saddle member unit, comprising across member extending across said space between said depending portionsof said saddle member unit, located between said upper and lower edgesand having a pair of ends each of which is connected to one of saiddepending side portions; an elongated shaft member located in saidsaddle member and having the hook for the load on the saddle memberconnected thereto, said shaft member having a projection mounted at anend thereof; means for connecting said elongated shaft member to saidcross member comprising a bifurcated element having the bifurcationsthereof located on opposite sides of said cross member, the saidbifurcated element being formed with an opening passing transverselytherethrough and the said elongated shaft member extending through saidlastmentioned opening; and means for fixedly connecting said bifurcatedelement to said elongated shaft member, comprising a threaded openingextending through a portion of said bifurcated element which overliessaid shaft member and a screw member threadedly mounted in said threadedopening and bearing against said shaft member, said elongated shaftmember being prevented from completely sliding through said openingpassing transversely through said bifurcated element by contact of saidprojection thereof with said bifurcated element, and said bifurcatedelement extending upwardly from said cross member and toward said topportion of said saddle member unit so that it is adjacent to butslightly spaced from said top portion of said saddle member unit,whereby said elongated shaft member and bifurcated element maybe'removed from said saddle member unit only after turning saidbifurcated element and said shaft member therewith about said crossmember.

8. In a drawing mechanism for spinning machines having clearer rollersand saddle-loaded pairs of upper rollers located in the forward drawingfield and connected by a shaft extending between said pairs of rollers,in combination, an

elongated saddle member unit haying a U -shaped cross section sothatsaidunit comprises a ,pair.

of depending side portions forming a space therebetween and having upperedges connected-by a top portion of said unit, thevsaid side portionshaving lower edges distant from-said upper edges and having partsthereofincluding said lower edges cut away so asto form spaced-recesses in oneside portion located opposite to spaced-re cesses in theother sideportion, said recesses extending upwardly fromsaidlower edges, wherebythe shafts connecting theupper rollers maybe located in said recesses ofsaid saddle member means, being immovably mounted onsaidsaddle memberunit, comprising across .member ex-. tending across said space betweensaid depending portions of said saddle member. unit, located be..- tweensaid upper and. lower edges and. having a pair of ends each ofwhich isconnected to one of said depending.sideportions; means for. connectingsaid saddle member .unit tosaid drawing mechanism in such a way thatsaid saddle member may be removed from said-drawing mech-- anism andreplaced'bya saddle member unit. of a difierent size than said'firstmentionedsaddle member unit; and spring means mounted onsaid saddlemember unit between said depending side portions thereof and embracingsaid shafts-oi said rollers for yieldably connecting said rollers tosaid saddle memberunit so that when'said unit is removed said rollersare carried therewith and so that said'rollers may easilybe removed fromsaid saddle member unit by separating said rollers from said springmeans.

9. In a drawing mechanism for spinning machines having clearer rollersand saddle-loaded pairs of upper rollers located in the forward drawingfield and connected by ashaft extending between said pairs of rollers,incombinationan,

elongated saddle member unit having a U-shaped cross section so thatsaid. unit comprises a ,pair of depending side portions forming a spacetherebetween and having upper edges connected by a top portion. of saidunit, the said sideportions having lower. edges distant from said upper.edges and havingparts thereqf including said lower edges cut away so asto formspaced recesses in one side portion located opposite to. spacedre. cesses in the other side portion saidrecesses ex.. tending upwardlyfrom saidlower edges, whereby the shaftsconnectingthe upper rollersmaybe located i said recesses of said saddle member unit, the saidsaddle member ,unit being ,made of a resilient material, so that said.depending. side portions thereof, may be .yieldingly moved, toward eachother, andthe said sideportions .yieldingly bearing against adjacent.sidespf said .pairs .of upper rollers, said, lower. edges adjacent tosaid recesses being bent outwardly .so that saidrollers are yielding lymaintained insaid saddle. member unit, and. said saddlememberunit havingparts of .said-topv-portion bent upwardly therefrom so as to formholders for clearer rollers; connecting. means fixedly mounted on. saidsaddle member unit for connecting the load for said upper rollers tosaid saddle member unit, said last-mentioned means being .immovablymountedon said saddle member unit andcomprising .a cross memberextending across said space between said depend- 12 ing portions of saidsaddle member. unit, located between said upper andloweredges and havinga pair oi ends each-of Which is connected .to one of said depending sideportions; and. means for.

connecting said saddle member unit to said drawing mechanism in such awayithat said saddle.

member may be removed from said drawing mechanism and replaced by asaddle member unit of a different size thansaid firstmentioned saddlemember unit.

0-; I dr v amecb eism r n n chines, having clearer rollers andsaddle-loaded pairs of upper rollere located in; the forward drawingfieldand connected by a shaft extending between said pairs of rollers,incombination, an elongated saddle member unit having a U-shaped crosssection so that said-unitcomprisesa pair of depending sideportionsforming a space therebetween and having upper edges connected by a topportion of said unit, the said-sideportions havinglower edgesdistant.fromsaid upper edges and having parts thereof including said lower edges.cut, away .soas to, form,spaced,recesses in one side portionlocatedoppositentov spaced re: cesses in the other side portion, said recessesextending upwardly .fromsaid-lower edges, .whereby the shafts connectingthe. upper rollers may be.

locatedmin said recesses .of said. saddle .member unit, and saidsaddleinember unit having parts of said. .top .portion. bent upwardlytherefrom, so. as to form holders .for clearer rollers; connecting.

means fixedly rmounted on said. saddlemember. unit for connectingtheload forsaidlupper rollers to said saddle member. unit,saidlast-mentioned meam, being immovably mountedon said saddle memberunit, comprising across member extending across-said space between'saiddepending-portions ofsaid saddle member unit, locatedbetween said upperand lower edges and having a -pair of ends eachv ofwhiclr isconnected-to one of .saiddepending side portions; means for connecting saidsaddle mem-ber unit to saiddrawing mechanism-insuch-a way'that saidsaddle member may be removed from said drawing mechanism and replaced bya saddle member-unit of a different size than-- said I first-mentionedsaddle member unit; spring means mounted onsaid saddle memberunit between said depending side portions thereof and embracing saidshafts of said rollers for yieldably connecting said rollers to saidsaddle member unit so that when said unit is removed said rollers arecarried therewith and so that said rollers may easilybe removed fromsaid saddle member unit by separatingsaid rollers from s'aid springmeans; an elongated 'shaftmember located insaid saddle member and havingthehook for he l a n. h ddl em e onne e thereto, said. shaft; meznberhaving a projection o n e at ne t reo e n v nne t n a e o eat ds a t meme to sai cr m mber comprising abifurcated element, having thebifurcation thereof located on opposite sides of said cross member, thesaid. bifurcatedelement being formed w i th an openingpassingvtransversely therethrough andthe saidelongated. shaft member.extendin through, said. last-mentioned openin and Ineans for,fixed1yconnectingsaid bifurcated elementto said elongatedshaft mem. ber,,comprising a threaded, opening extending through a portion ofsaidbifurcated, element which overlies .said. shaft .member and a screwmemberv threadedly, mounted. in. said I threaded opening and. bearingagainst said shaft member, saidelongated shaft member being. preventedfrom completely sliding through said opening passing transverselythrough said bifurcated element by contact of said projection thereofwith said bifurcated element, and said bifurcated element extendingupwardly from said cross member and toward said top portion of saidsaddle member unit so that it is adjacent to but slightly spaced fromsaid top portion of said saddle member unit, whereby said elongatedshaft member and bifurcated element may be removed from said saddlemember unit only after turning said bifurcated element and said shaftmember therewith about said cross member.

11. In a drawing mechanism for spinning machines having clearer rollersand saddle-loaded pairs of upper rollers located in the forward drawingfield and connected by a shaft extending between said pairs of rollers,in combination, an elongated saddle member unit having a U-shaped crosssection so that said unit comprises a pair of depending side portionsforming a space therebetween and having upper edges connected by a topportion of said unit, the said side portions having lower edges distantfrom said upper edges and having parts thereof including said loweredges cut away so as to form spaced recesses in one side portion locatedopposite to spaced reoesses in the other side portion, said recessesextending upwardly from said lower edges, whereby the shafts connectingthe upper rollers may be located in said recesses of said saddle memberunit, and said saddle member unit having parts of said top portion bentupwardly therefrom so as to form holders for clearer rollers; connectingmeans fixedly mounted on said saddle member unit for connecting the loadfor said upper roll erstosaidsaddle member unit, said last-mentionedmeans being immovably mounted on said saddle member unit and comprisinga cross member extending across said space between said dependingportions of said saddle member unit, located between said upper andlower edges and having a pair of ends each of which is connected to oneof said depending side portions; spring means mounted on said saddlemember unit between said depending side portions thereof and embracmesaid shafts of said rollers for yieldably connecting said rollers tosaid saddle member unit so that when said unit is removed said rollersare carried therewith and so that said rollers may easily be removedfrom said saddle member unit by separating said rollers from said springmeans; an elongated shaft member located in said saddle member andhaving the hook for the load on the saddle member connected thereto,said shaft member having a projection mounted at an end thereof; meansfor connecting said elongated shaft member to said cross membercomprising a bifurcated element having the bifurcations thereof locatedon opposite sides of said cross member, the said bifurcated elementbeing formed with an opening passing transversely therethrough and thesaid elongated shaft member extending through said last-mentionedopening; means for fixedly connecting said bifurcated element to saidelongated shaft member, comprising a threaded opening extending througha portion of said bi furcated element which overlies said shaft memberand a screw member threadedly mounted in said threaded opening andbearing against said shaft member, said elongated shaft member beingprevented from completely sliding through said opening passingtransversely through said bifurcated element by contact of saidprojection thereof with said bifurcated element, and said bifurcatedelement extendin upwardly from said cross member unit so that it isadjacent to but slightly spaced from said top portion of said saddlemember unit, whereby said elongated shaft member and bifurcated elementmay be removed from said saddle member unit only after turning saidbifurcated element and said shaft member therewith about said crossmember; and a pawl member pivotally mounted at the entrance end of saiddrawing mechanism, said top portion of said saddle member unit beingformed with an opening passing therethrough and having an edge whichsaid pawl member engages so as to connect said saddle member unit tosaid drawing mechanism and so a to permit the removal of said saddlemember unit from said drawing mechanism.

12. In a drawing mechanism for spinning machines having clearer rollersand saddle-loaded pairs of upper rollers located in the forward drawingfield and connected by a shaft extending between said pairs of rollers,in combination, an elongated saddle member unit having a U-shaped crosssection so that said unit comprises a pair of dependin side portionsforming a space therebetween and having upper edges connected by a topportion of said unit, the said side portions having lower edges distantfrom said upper edges and having parts thereof including said loweredges cut away so as to form spaced recesses in one side portion locatedopposite to spaced recesses in the other side portion, said recessesextending upwardly from said lower edges, whereby the shafts connectingthe upper rollers may be located in said recesses of said saddle memberunit, the said saddle member unit being made of a resilient material sothat said depending side portions thereof may be yieldingl moved towardeach other, and the said side portions yieldingly bearing againstadjacent sides of said pairs of upper rollers, said lower edges adjacentto said recesses being bent outwardly so that said rollers areyieldingly maintained in said saddle member unit, and said saddle memberunit having parts of said top portion bent upwardly therefrom so as toform holders for clearer rollers; connecting means fixedly mounted onsaid saddle member unit for connecting the load for said upper rollersto said saddle member unit, said last-mentioned means, being immovablymounted on said saddle member unit, comprising a cross member extendingacross said space between said depending portions of said saddle memberunit, located between said upper andlower edges and having a pair ofends each of which is connected to one of said depending side portions;means for connecting said saddle member unit to said drawing mechanismin such a way that said saddle member may be removed from said drawingmechanism and replaced by a saddle member unit of a different size thansaid first mentioned saddle member unit; an elongated shaft memberlocated in said saddle member and having the hook for the load on thesaddle member connected thereto, said shaft member having a projectionmounted at an end thereof; means for connecting said elongated shaftmember to said cross member comprising a bifurcated element having thebi furcations thereof located on opposite sides of said cross member,the said bifurcated element being formed with an opening passingtransversely therethrough and the said elongated shaft member extendingthrough said last-mentioned opening; and means for fixedly connectingsaid bifurcated element to said elongated shaft member, comprising athreaded opening extending through a portion of said bifurcated elementwhich overlies said shaft member and a screw member threadedly mountedin said threaded opening and bearing against said. shaft member, saidelongated shaft member being prevented from completely sliding throughsaid opening passing transversely through said bifurcated element bycontact of said projection thereof with said bifurcated element, andsaid bifurcated element extendin upwardly from said cross member andtoward said top portion of said saddle member unit so that it isadjacent to but slightly spaced from said top portion of said saddlemember unit, whereby said elongated shaft member and bifurcated elementmay be removed from said saddle member unit only after turning saidbifurcated element and said shaft member therewith about said crossmember.

13. In a drawing mechanism for spinning machines having clearer rollersand saddle-loaded pairs of upper rollers located in the forward drawingfield and connected by a shaft extending between said pairs of rollers,in combination, an elongated saddle member unit having a U-shaped crosssection so that said unit comprises a pair of depending side portionsforming a space therebetween and having upper edges connected by a topportion of said unit, the said side portions having lower edges distantfrom aid upper edges and having parts thereof including said lower edgescut away so as to form spaced recesses in one side portion locatedopposite to spaced recesses in'the other side portion, said recessesextending upwardly from said lower edges, Whereby the shafts connectingthe upper rollers may be located in said recesses of said saddle memberunit, the said saddle member unit being made of a resilient material sothat said depending side portions thereof may be yieldingly moved towardeach other, and the said side portions yieldingly bearing againstadjacent sides of said pairs of upper rollers, said lower edges adjacentto said recesses being bent outwardly so that said rollers areyieldingly maintained in said saddle member 7 of said depending-sideportions; an elongated shaft member located'in said saddle memberandhaving the hook for the load onthe saddle member connected thereto,said shaft member having' a projection mounted at an end thereof; meansfor connecting saidelongated shaft member to said cross membercomprising a bifurcated element having the bifurcations thereof locatedon opposite sides of said cross member, the said bifurcated elementbeing formed with an opening passing transversely therethrough and thesaid elongated shaft member extending through said last-mentionedopening; means for fixedly connecting said bifurcated element to saidelongated shaft member, comprising a threaded opening extending though aportion of said bifurcated element which overlies said shaft member anda screw member threadedly mounted in said threaded opening and bearingagainst said shaft member, said elongated shaft member bein preventedfrom completely sliding through said opening passing transverselythrough said bifurcated'element by contact of said projection thereofwith said bifurcated element, and said bifurcated element extendingupwardly from said cross member and toward said top portion of saidsaddle member unit so that it is adjacent to but slighly spaced fromsaid top portion of said saddle member unit, whereby said elongatedshaft member and bifurcated element may be removed from said saddlemember unit only after turning said bifurcated element and said shaftmember therewith about said cross member; and a pawl member pivotallymounted at the entrance end of said drawing mechanism, said top portionof said saddle member unit being formed with an opening passingtherethrough and having an edge which said pawl member engages so as toconnect said saddle member unit to said drawing mechanism and so as topermit the removal of said saddle member unit from said drawingmechanism.

WILHELM STAHLECKER.

REFERENCES CITED The followingreferences are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 411,388 Meats Sept. 17, 18891,944,965 Casablancas Jan. 30,1934 2,246,474 Stahlecker June 1'7, 1941'2,353,333 Hess July 11, 1944 2,359,820 Solanas Oct. 10, 1944

